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Lazarus Long Profile picture
@LazarusLong13
May 31, 2023 • 21 tweets • 12 min read • Read on X
Scrolly
Making the case for the #CorsiRosenthalBox with studies.

A simple thread.
"no U.S. Energy Star certified air cleaners have CADR values (for either tobacco smoke, dust, or pollen) matching the CADR value for the CR Box even on low speed "

On cost? 1/10th.

1019 to 1444 m3/hr CADR.

(600 to 850 ft3/min)

Published here:
tandfonline.com/doi/full/10.10… ImageImage
An incredibly thorough study published in February 2023, with all of its authors from @NIOSH.

With universal masking in a 3-ply cotton mask, exposure to the relevant aerosol size is reduced by 88 to 94%, with the #CorsiRosenthalBox.

73% w/ CRBox alone.

sciencedirect.com/science/articl… ImageImage
Very good thread on this study here:

Essentially the same NIOSH team investigated HEPA efficacy.

65% reduction with HEPA alone.

So, at a much cheaper price, the #CorsiRosenthalBox gets better results.

cdc.gov/mmwr/volumes/7…
But can HEPAs remove SARS-COV-2 from the air? Yes.

(Would #CorsiRosenthalBox do the same? Yes - faster and cheaper.

Has it been studied specifically for this? No. HEPAs barely have.

Do the same laws of physics apply? Yes.)

journals.asm.org/doi/full/10.11… Image
But can HEPAs really remove SARS-COV-2 from the air?

Yes - in a UK hospital, HEPAs were off. Cov1d was in the air. Turned on. No more CoV1d.

1000 m3/hour CADR.

Remember the first study?

1019 to 1444 m3/ hour for the CR box.

cuh.nhs.uk/news/air-filte…

academic.oup.com/cid/article/75… Image
@MarinaC_Dyb and her fellow authors found a massive reduction in aerosols in OCCUPIED classrooms using the #CorsiRosenthalBox. Also found that ALL of the air went in.

No wonder they have rolled them out to 400 locations.

Study is linked here:
indoorairquality.initiative.uconn.edu/testing-the-ef… Image
Oh for Pete's sake. @elonmusk has just killed another thread.

Let me add these manually.
"Also found that ALL of the air went in" - quoting above to go into a little more detail:

This answers, in a study, the concern that it just moves the air around. That it won't go into the filter.

It does, and this had to be pointed out.
The CDC, of which NIOSH is part of, has officially recommended 5 ACH, minimum, and that DIY Air Cleaners are effective at reducing the risk of transmission of Cov1d.

The #CorsiRosenthalBox is
specifically mentioned as part of that solution.

cdc.gov/coronavirus/20… ImageImageImage
@3M has studied it in their formal lab - and is officially on board:

news.3m.com/2022-02-24-3M-…
The famous UL, Inc testing the safety of the #CorsiRosenthalBox, to make sure it won't catch on fire.

It won't - even if the filters are loaded up.

(The link that is out on Twitter appears to be dead.)

ul.org/library/2988
"Does Using Corsi–Rosenthal Boxes to Mitigate COVID-19 Transmission Also Reduce Indoor Air Concentrations of PFAS and Phthalates?"

Yes.

pubs.acs.org/doi/10.1021/ac… Image
Some have expressed surprise that this was found.

Dr. Corsi explains:

And the rest of your family?

30 case studies- oops, 30 of your stories here, where your family used the #CorsiRi
A thesis - a study, that found 7 PFAs, and exposure to for both dog and human. (@ShellyMBoulder collaborated).
elischolar.library.yale.edu/ysphtdl/2161/ Image
How do we know that dogs are affected? Because it is dogs that get experimented on.

And not to get too personal, but my dog has stage 4 chronic kidney disease. CKD can be caused by PFAs.

Did I do that? Or at least not prevent it? A lot of

wunc.org/health/2021-05… Image
years with no air filtration.

But hey - she is 15 years old, and it could be just old age.

In any event, I don't want to go into any more detail, but now I know better.

But besides PFAs, dogs can catch Cov1d.

As can cats.

In fact, from the study, we should see our cat as part of our family regarding virus transmission.

Can a cat or dog wear a mask?

Yes, with training.

But what if you could reduce their risk of catching Cov1d without all that? Image
And the risk to the rest of your family?

30 case studies- oops, 30 of your stories here, where your family used the #CorsiRosenthalBox as the centerpiece of your family pandemic prevention protocol.

And it worked.

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More from @LazarusLong13

Lazarus Long Profile picture
Mar 26
I've become a bit of a Dental Nerd after just getting savaged by avoiding the dentist due to COVID.

But, now, I have a Dental Nasal PAPR, know all about Stephan's Curve, use a waterpik, Oral-B iO Series 10, chew 8 pieces of xylitol gum - and the dentist just said that.....
He has never seen anyone reverse course so perfectly before.

"Immaculate."

And bonus...I ran into a fellow masker in his lobby!!

She had never heard of Readimask, so I was super happy to share the Good Word with her.

Sharing the Good Word - not COVID!
Good point.

Read 4 tweets
Lazarus Long Profile picture
Mar 16
Now, this is a very interesting PREPRINT.

We've all heard that shingles vaccination reduces risk of Alzheimer's.

And we all know that Covid increases the risk of Alzheimer's by 50-80%.

What happens when you mix them? Will the vaccination offset a different disease?

/1 Opposing effects of SARS-CoV-2/COVID-19 infection and recombinant zoster vaccination on the risk of late-onset Alzheimer disease View ORCID ProfileCarly M. Rose, Shiying Liu, View ORCID ProfileWilliam S. Bush, Jonathan L. Haines, Scott M. Williams, View ORCID ProfileDana C. Crawford N3C Consortium doi: https://doi.org/10.64898/2026.01.21.26344555 This article is a preprint and has not been peer-reviewed [what does this mean?]. It reports new medical research that has yet to be evaluated and so should not be used to guide clinical practice.
Yes.

But by how much? Conclusions and Relevance SARS-CoV-2/COVID-19 infection and recombinant zoster vaccination are modifiable risk factors for LOAD among older individuals, with a modestly significant interaction between the two. Recombinant zoster vaccination reduced LOAD risk regardless of sex and race, though the protection is greater in those without documented COVID-19 infection. Recombinant zoster vaccination and reduced exposure to COVID-19 infection in the later decades of life reduce the risk of developing Alzheimer disease over at least a five-year period.
Useful for below - "Late-onset Alzheimer disease (LOAD; onset age ≥65)"

"odds of LOAD are 16% higher among those with at least one reported COVID-19 infection" Image
Read 7 tweets
Lazarus Long Profile picture
Mar 3
A doctor complaining about wearing N95s? Thread foreshadow in the gif 👇.

Dr. Sax, you should read this.

The arrogance of medical doctors thinking they know better than the CDC NIOSH and OSHA?

This comes as no surprise.
Imagine if an asbestos worker, or a tech working in BioSafety Lab was complaining about this.

But somehow, doctors making over $200,000 get carte blanche and and a piece in the @NEJM Voices.

And he does have a loud voice.
This is Dr. Sax, Clinical Director, Division of Infectious Diseases (ID), at THE Harvard hospital. In 2014, he wrote about how ID docs only make $174,000.

He probably makes northwards of $269,000.

This is very, very relevant.

You see, he is put out by the inconvenience Image
Read 23 tweets
Lazarus Long Profile picture
Feb 27
From the ZeroCovid sub on Reddit.

How DO we do it?

Hyper vigilance, constant exposure calculations, discussing and taking precautions?

How do I do it?

Quick thread. I would like to hear covid conscious folks opinions on this: I have long covid (mecfs + pots + mcas). I’ve been sick to varying degrees since 2022. My life has been severely affected by this. At this point, I can’t work. I am mostly housebound, recovering slowly but I still have to spend some days in bed. Recovery from this is awful, especially because it’s not widely understood. With all that said. I still feel like, for me, a life full of hyper vigilance, constant exposure calculations, discussing and taking precautions…I can’t do it. I don’t want to live that way. How can I approach t...
I don't do it.

I don't do exposure calculations.

I don't have hyper vigilance.

I am Vax, Mask, and Relax.

For me, it's just a series of habits now. Drive to the wherever, hit parking lot, put on N95. Get out of car. Stays on until I get back into the car.
A new vaccine comes out? I get it.

I go stay in a hotel?

2nd floor Motel 6 with no shared HVAC (has the PTAC) . Open door/windows for one hour until complete air exchange.

Go through a drive through? N95 on before window is rolled down. Drive away? I roll down both to
Read 6 tweets
Lazarus Long Profile picture
Feb 26
After reading a study, and reaching for my phone, if the first thing I do is check to see if I have @'d someone in the past?

That's not a good sign.

I have never @'d them, and this is not directed @ them.

But this IS a debunk thread.

And it starts with who.

/1
Study here. Before you read it?

This thread is about providing context. Read the thread, @SalvMattera's comments, AND THEN, read the study.

0/10 from me.

thelancet.com/journals/lanep…
Who paid for it? The Dutch government - who has been spectacularly almost Tegnell-like in their downplaying of LongCovid and masks.

Lead authors are from RIVM, their CDC.

RIVM was antimask even when they FINALLY recommended masks in OCTOBER 2020.

nltimes.nl/2020/10/03/dut…Image
Image
Read 13 tweets
Lazarus Long Profile picture
Dec 21, 2025
Oh, we are cooked. Just cooked.

"Brain Mitochondrial dysfunction, known for ~20 years is finally recognized as a central upstream driver of Alzheimer’s disease (AD), not just a downstream effect."

And SARS2's targeting of mitochondria is well-known.

Even in the brain.
/1 We identified dysregulation of mitochondrial and synaptic pathways in deep-layer excitatory neurons and upregulation of neuroinflammation in glia, consistent across both mRNA and protein. Remarkably, these alterations overlapped substantially with changes in age-related neurodegenerative diseases, including Parkinson’s disease and Alzheimer’s disease. Our work, combining multiple experimental and analytical methods, demonstrates the brain-wide impact of severe acute/subacute COVID-19, involving both cortical and subcortical regions, shedding light on potential therapeutic targets within pat...
@LauraMiers, in case you don't have it.

nature.com/articles/s4358…
@LauraMiers This is yet another reason why I N95.

Read 6 tweets

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